9/25 HS Physics Class update and homework due 10/2
Hi folks,
Today we really got rolling on our first unit of motion by taking the time on this beautiful day to try out our skills at finding velocities. The students were challenged to find the velocities of a dart shot out of a Nerf dart gun. It was a bit more challenging than folks were expecting but over time we got some pretty good data sets.
For homework this week do the following 3 assignments.
1. Do the enclosed worksheet (answers are below).
2. Answer the questions in the email
3. Answer the question based on today's lab.
ALSO answer the following questions
1. What is the definition of precision?
2. What is the definition of accuracy?
3. If someone tells you they travelled 20 miles in 2 hours which of the following can you figure out? Distance, Time, Average Speed, Instantaneous speed, Velocity, Displacement
4. If someone tells you they ran 5 miles South in 5 minutes which of the following can you figure out? Distance, Time, Average Speed, Instantaneous speed, Velocity, Displacement
5. If someone tells you they went from 0 mph to 20 mph in 30 seconds and are presently traveling at 20 mph and have been traveling at 20 mph for 5 minutes, what can you figure out?
Distance, Time, Average Speed, Instantaneous speed, Velocity, Displacement
1. What three things would you change in order to get more accurate results?
2. Take a look at the two data tables I've included. Answer the following questions based on the data.
a. Which group has velocity data and which group has speed?
b. One group seemed to get consistently lower numbers than the others. Why do you think that is?
c. Looking at Group 1 in Class 2 and comparing it to the rest of the data from all groups, which of their data points may actually be the most accurate?
d. Which group's set of data is the most precise?
e. Class 2 seems to have an average 10 mph lower than class 1. Create 2 hypotheses that can be tested based on this observation.
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